Climate and monthly weather forecast
Wheaton, MO

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Weather in January

January, like December, in Wheaton, Missouri, is another cold winter month, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 42.4°F (5.8°C). Wheaton reaches its lowest average temperatures in January, measuring 42.4°F (5.8°C) at the peak and 27°F (-2.8°C) at the lowest. Weather in January »

Weather in February

February, the last month of the winter in Wheaton, is a frosty month, with an average temperature ranging between min 30.6°F (-0.8°C) and max 46.4°F (8°C). February's presence records an average high-temperature of a chilly 46.4°F (8°C), closely mirroring January's climate. Weather in February »

Weather in March

The first month of the spring, March, is a moderate month in Wheaton, Missouri, with temperature in the range of an average high of 57.2°F (14°C) and an average low of 39.7°F (4.3°C). The start of March signals an increase in the average high-temperature, moving from a frosty 46.4°F (8°C) in February to a refreshing 57.2°F (14°C). Weather in March »

Weather in April

April is a refreshing spring month in Wheaton, Missouri, with an average temperature fluctuating between 66.7°F (19.3°C) and 47.8°F (8.8°C). As April begins, there is an increase in the average high-temperature, moving from a moderate 57.2°F (14°C) in March to an enjoyable 66.7°F (19.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a warm month in Wheaton, Missouri, with an average temperature ranging between max 75.6°F (24.2°C) and min 56.3°F (13.5°C). May signals a minor shift in the average high-temperature, moving from April's comfortable 66.7°F (19.3°C) to a warm 75.6°F (24.2°C). Weather in May »

Weather in June

The first month of the summer, June, is a hot month in Wheaton, Missouri, with temperature in the range of an average high of 86°F (30°C) and an average low of 66.2°F (19°C). Wheaton's transition into June is marked by a rise in the average high-temperature, advancing from a moderately hot 75.6°F (24.2°C) in May to a hot 86°F (30°C). Weather in June »

Weather in July

July, the same as June, in Wheaton, Missouri, is another tropical summer month, with an average temperature ranging between max 88.9°F (31.6°C) and min 68.9°F (20.5°C). July proves to be the warmest month, recording an average peak temperature of 88.9°F (31.6°C) and a minimum temperature of 68.9°F (20.5°C). The average heat index in July is estimated at an extremely hot 104°F (40°C). Weather in July »

Weather in August

The last month of the summer, August, is another tropical month in Wheaton, Missouri, with an average temperature fluctuating between 87.3°F (30.7°C) and 66.7°F (19.3°C). The shift into August records an average high-temperature of a still hot 87.3°F (30.7°C), subtly varied from July's 88.9°F (31.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Wheaton, is still a warm month, with an average temperature fluctuating between 80.1°F (26.7°C) and 60.4°F (15.8°C). Wheaton, Missouri, in September undergoes a slight reduction in the average high-temperature, shifting from August's hot 87.3°F (30.7°C) to a moderately hot 80.1°F (26.7°C). Weather in September »

Weather in October

October, like September, in Wheaton, Missouri, is another refreshing autumn month, with an average temperature fluctuating between 67.3°F (19.6°C) and 48.9°F (9.4°C). The transition into October involves a decrease in the average high-temperature, falling from a warm 80.1°F (26.7°C) in September to a comfortable 67.3°F (19.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another mild month in Wheaton, Missouri, with an average temperature varying between 38.5°F (3.6°C) and 55.6°F (13.1°C). With the onset of November, Wheaton experiences a modest temperature adjustment, with the average high-temperature receding from an enjoyable 67.3°F (19.6°C) in October to a moderate 55.6°F (13.1°C). Weather in November »

Weather in December

December, the first month of the winter in Wheaton, is still a chilly month, with an average temperature ranging between max 45.5°F (7.5°C) and min 31.1°F (-0.5°C). Wheaton's transition into December involves a shift in temperature, receding from a mild 55.6°F (13.1°C) in November to a chilly 45.5°F (7.5°C). Weather in December »
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Frequently asked questions

What part of the year is the coldest in Wheaton?

January, having an average high-temperature of 42.4°F (5.8°C) and an average low-temperature of 27°F (-2.8°C), is the coldest month in Wheaton.

What is the least humid month in Wheaton?

The months with the lowest humidity in Wheaton, Missouri, are January, July, August and October, with an average relative humidity of 73%.

How much does it rain in Wheaton?

In Wheaton, Missouri, during the entire year, the rain falls for 152.1 days and collects up to 34.45" (875mm) of precipitation.

When does it snow in Wheaton?

January through May, November and December are months with snowfall in Wheaton, Missouri.

What is the snowiest month in Wheaton?

The months with the most snowfall in Wheaton are January and February, with an average 2.17" (55mm) of accumulated snow.

How much does it snow in Wheaton?

Throughout the year, there are 16.6 snowfall days, and 7.2" (183mm) of snow is accumulated.

What is the month with the least sunshine in Wheaton?

With an average of 5.3h of sunshine, January has the least sunshine of the year in Wheaton, Missouri.

When is the lowest UV index in Wheaton?

The months with the lowest UV index in Wheaton, Missouri, are January and December, with an average maximum UV index of 2.

What is the driest month in Wheaton?

February is the month with the least rainfall in Wheaton, Missouri. Rain falls for 8.8 days and accumulates 1.65" (42mm) of precipitation.

When is Daylight Saving Time (DST) in Wheaton?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Wheaton, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the most humid month in Wheaton?

The most humid month is May, with an average relative humidity of 78%.

What is the wettest month in Wheaton?

The month with the most rainfall in Wheaton is May, when the rain falls for 17.2 days and typically aggregates up to 5" (127mm) of precipitation.

What are the months with the highest UV index in Wheaton?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Wheaton.

When it does not snow in Wheaton?

June through October are months without snowfall.

When are the longest days in Wheaton?

With an average of 14h and 36min of daylight, June has the longest days of the year in Wheaton, Missouri.

What is the month with the most sunshine in Wheaton?

June and July, with an average of 10.6h of sunshine, are months with the most sunshine in Wheaton.

What part of the year is the hottest in Wheaton?

Wheaton, Missouri, experiences its highest temperatures in July, with an average peak of 88.9°F (31.6°C) and a low of 68.9°F (20.5°C).

What is the month with the shortest days in Wheaton?

December has the shortest days of the year in Wheaton, with an average of 9h and 42min of daylight.

Average temperature
Wheaton, MO

Average temperature - Wheaton, MO

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (42.4°F).

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (27°F).

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Average pressure
Wheaton, MO

Average pressure - Wheaton, MO

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed
Wheaton, MO

Average wind speed - Wheaton, MO

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).

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Average humidity
Wheaton, MO

Average humidity - Wheaton, MO

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).

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Average rainfall
Wheaton, MO

Average rainfall - Wheaton, MO

The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is February (1.65").

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Average rainfall days
Wheaton, MO

Average rainfall days - Wheaton, MO

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.4 days).

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Average snowfall
Wheaton, MO

Average snowfall - Wheaton, MO

The months with the highest snowfall are January and February (2.17").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days
Wheaton, MO

Average snowfall days - Wheaton, MO

The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Wheaton, MO

Average daylight / Average sunshine - Wheaton, MO

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

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Average sunshine days
Wheaton, MO

Average sunshine days - Wheaton, MO

The month with the most sunshine days is December (20.5 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index
Wheaton, MO

Average UV index - Wheaton, MO

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average visibility
Wheaton, MO

Average visibility - Wheaton, MO

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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Wheaton, Missouri, USA

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